Speed-jack for windmills.



fi'fENTEb Y s1, 1 9 0 6. .0. M; MBNDENHALL. SPEED JACK FOR WINDMILLS.

v APILIbATION FILED JUNE 24, 1905.

fiwnlbr M NDEN LIJ, .OF NE TON; iewr "sPEED- JAcK FoFtwmomlLLs.

T alt whom it may concern;

. Be it known that 1,. OLIVER-MORTON MEN- DENHALL, a citizen of the United States, 're- It is my object, further, to provide lever-' device connected. with v the windmillrod,

' 30 which is shown in cross-section; and Fig. 3

siding at Newton, in the county of Jasper and State of Iowa, have invented a certain new and. useful Speed- Jack for Windmills, of

which the following is a specification.

' The objects of my invention are to provide a mechanism for converting the reciprocating motion of a rod, such as a windmill rod or pitman, into arotary motion to utilize the power for operating or running machinery which is driven from a belt and a-rotary shaft.

operated'pawls'which provide for a continuous and steady rotary movement as the motion is being converted from a reciprocating to a rotary movement.

My mventionconsists in certain details in thecdnstruction, arrangement, and combinatlon' of the various parts of the device whereby the objects contemplated are at-v tained, as hereina fter more fully set.forth, pointed out in my claim, and, illustrated in the accompanying drawings, in which- Figure '1 shows. a portion of a tower with my device connected with its reciprocating rod. Fig. 2 is a plan view of my a side elevation of my complete device lool-i ing at the opposite'side of it from that shown 21, which are conneiited cross-sills 22 and 23.

m'Fig. 1.

Referring to the accompanying drawings,

1 have used the reference-numeral tom dicate a windmill-tower, the numeral .11 to indicate the windmill-rod, and the numeral 12 to indicate a short ,rodwhic'h is detachably secured to the windmill-rod by the bolts 13 and which is-pivoted at its lower endto a le: ver 14 by means of the bolt. 15. I have provided a post 16, towhich the lever 14 is pivoted and bymeans. of the bolt 17. Extending from and at right'angles to thejcentral por 45.

tion of the lever 14 is an arm 18. 1 Connecting the ends of the lever 14 and the arm 18 is a brace 19, designed to hold them rigidlyin position relative to eachotherv At the op 0+ site sideof the post 16 from the rod 11 ,1s a

wheel-bearing framefhaving twoisills 20and-i at their ends by the frame, mounted in the sills 20 and 21 and at one end of it, is a shaft 25. Extending across i a Specification of Letters Patent;

Application fil8d Jmi6.24:, 10 5. Serial Rio-2661870.

windmillthe ratchet 31'and is so arranged that as the" and 37 are being o'perated' continuously-by ,the lever 14 and arm 18 a's the windmil d This frame is'rnounted' on four legs, each of which I-have numbered 24;. I Extending across the wheel: bearmg] r tested m e1, 1906 the other end of, the 1 frame: and rotatably mounted-in the sills 20 and 21is a shaft 26..

Mounted onthe shaft 25'and between the Bill 20 and121 -isa-band-wheel 27. Mounted on the shaft 26and between the" sills 20 and 21 is a bands w eel 28. Passingaround t band-wheel 27 and 28'is a'b'elt 29,so arranged that as the band wheel 27 is driven the bandwheel 28 will be driven. Mounted on-one end of the shaft 26iand outside of'the sill 20 is a series of band wheels 30, with which the; machine to be driven by a rotary shaft iscon nectedby abelt.

Mounted o'n the shaft 25, rigidly secured thereto and outside of the sill 21, is a ratchet 31. Pivoted" to the shaft and betweenthe ratchet 31. andthe sill 21 is a rock-arm 32',

which is connected" at its-free end to thefreeij; .end of the leverlibyineansbf a-link 33.

Pivoted to the side of the rock-'arm32 which the ratchet 31 is a awl 34*,s'b"= as the free end of t e lever 14:

is drawn upwardly the free end of the rockdrawn upwardly and the pawlis adjacent to arranged that arm 82 will be which engages the ratchet 31 will be forced upwardly and cause the ratchet 31to be ro 'tated slightly. i

.Pivoted to the shaft 2 5 and outside oi the which stands normally in engagementwith ratchet 31 is a rock-arm- 35, the free endwhich is connected with the free end of the arm 18 by means of the link 36. Pivoted to? the inside of the rock-arm 35 is the pawl 37',

free end of. the arm 18 moves away from the.

ratchet 31 thearrn 35 will be oscillated'andthe a'wl will also be oscillated to rotatethe ratc et 31. Inasmuch as the two. pawls '34 is reciprocated, and thesepawls arei'so ranged: relative 'to the'ratchet.v that when." one of them is rotating the ratchet} th'e,otheri 9 will be sliding over thei'ratchet,consequently the bandv'wheel 27 will-"be"continuously-rotated, as also the bandwheel 28 and a con-' v tinuous rotary m'ovementwill be imparted to ;the band-Wheels BO while the windmill-shaft isbeing reciprocatedjthe speedof the rotaryshaft; being, ofji'course, dependent upon" the speed of the reciprocating I cla 35A device for the pur a frame, I crumed at an intermediate pomt of its length a' vertica ly-swinging lever fulose set forth; comprise v 'on' said frame and havinginner and outer arms and also having an arm 18 defiending from its fulcrum-point and disposed at. right angles to the inner and outer arms, a shaft" her arm of the lever and the adijaeent rock-:

arm, a horizontal link connecting the depend- 1 o ingarm 18'of-the-1evea' and the '0ther-rock-.-

arm, a pawl denied by one rock ari'ri and arranged to turn the ratehetwhenthe lever is rocked 1h one d rection, and'apawl carried by the other rock-arm and arranged to turn the ratchet when'the lever is' rocked in the oppo- 15 site direction.

. OLIVER-MORTON MENDENBALL. Witnessesc GRANT WHEATCROFT, RoxHcmma. 

